Close up showing the 20 mph British Railways standard
cut-out speed restriction sign located at the end of the up platform. This
design was different to the standard GWR sign being adopted by British Railways
following an accident on 23rd January 1955 when a derailment occurred at Sutton
Coldfield, causing the deaths of seventeen people. An express train, which had
been diverted from its usual route, derailed at a speed of around 60 mph on a
curve restricted to 30 mph. As a recommendation of the Ministry of Transport's
report into the accident, British Railways reconsidered the provision of speed
restriction signs and decided to adopt the LNER system (as above but painted
white) as standard across the whole network. In 1963, following what had been
an exceptionally cold winter, British Railways took the decision to re-paint
all cut-out speed restriction signs yellow in order to improve their visibility
in snow.
The Great Western Railway General Appendix to the
Rule Book (1st Aug 1936) says:- |
Permanent Restriction of
Speed Indicators |
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Indicators,
illuminated at night are provided in connection with certain permanent
restrictions of speed which are specially noted in the schedule of 'Maximum
Speed of Trains' in the Service Time Tables. The indicator is fixed in rear of
the junction or other specified place where the speed restriction operates. The
actual position depends upon circumstances, and a permanent restriction of
speed indicator is not, therefore, an indication of the point at which
reduction of speed should commence, but a reminder to Drivers of the
restriction of speed to which it refers. |
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The 1st January 1959 BR document G.A.35 Op.
Alterations and Additions to the General Appendix to the Rule Book included the
modification which introduced the new sign:- |
Permanent Restriction of Speed
Indicators |
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The following to be substituted for the existing
instructions under this heading:- |
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Indicators, illuminated at night are
provided in connection with certain permanent restrictions of speed which are
specially noted in the schedule of 'Maximum Speed of Trains' in the Working
Time Tables. The indicator is fixed in rear of the junction or other specified
place where the speed restriction operates. The actual position depends upon
circumstances, and a permanent restriction of speed indicator is not,
therefore, an indication of the point at which reduction of speed should
commence, but a reminder to Drivers of the restriction of speed to which it
refers. |
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In connection with certain other permanent
restrictions of speed, which are also specifically noted in the schedules of
'Maximum Speed of Trains' in the Working Time Tables, signs having cut-out
numerals painted white, about 1 foot 6 inches in height and fixed approximately
6 feet above ground level, except at places of limited clearance where a dwarf
indicator, approximately 3 feet above ground level, and placed at the
commencement of the speed restrictions, are being provided. These latter signs
will not be illuminated and will be installed in accordance with the following
arrangements:- |
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1. The upper limit of speed permitted for
a route is not so indicated, either in respect of the main line or any parallel
lines, i.e. Slow, Relief, Goods, etc. |
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2. Except as shown in paragraph 6, speed
restrictions within those upper limits are indicated by signs fixed at
approximately the commencing point of the speed restriction. |
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3. Speed restriction signs applicable to
routes diverging either to the right or to the left have arrow indications
provided on the post below the numerals and pointing in the direction of the
line over which the speed restriction applies. |
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4. Where there is a speed restriction on
both routes over a diverging junction two signs are provided. The sign for the
lower speed route, with arrow indication, is fixed at approximately the
commencing point of the speed restriction, and the sign for the higher speed
route, without arrow indication, at approximately 40 yards on the approach side
of the first mentioned sign. |
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5. At two way diverging junctions where the
speed restrictions over the junction are the same for each route, one sign only
is provided with two arrows, one pointing in each direction. |
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6. Signs are not provided at junctions
between parallel lines, or facing crossover roads, or when entering or leaving
slow, relief, goods loops, platform or bay lines, etc., where the general speed
restriction as prescribed in the Sectional Appendices, or other publications,
is 15 m.p.h. (or such other general speed restriction as laid down). Where,
however, the permissible speed through such a junction is above or below the
general speed restriction, a sign is provided. |
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7. The indicator signs mark the
commencement of the speed restrictions only and in no way relieve the driver
from the necessity of obeying all restrictions shewn in the Sectional
Appendices or other publication. |
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BR General Appendix to Working Timetables (1st
October 1960) says:- |
Permanent Speed Restrictions - Indicator
Signs |
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Permanent Speed Restriction Indicator Signs
which shew by means of white numerals fixed on posts about six feet above rail
level, the maximum permissible speed immediately ahead, are erected at the
lineside in accordance with the following arrangements:- |
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1. The upper limit of speed permitted for a
route is not so indicated, either in respect of the main line or any parallel
lines, i.e. Slow, Relief, Goods, etc. |
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2. Except as shown in paragraph 6, speed
restrictions within those upper limits are indicated by signs fixed at
approximately the commencing point of the speed restriction. |
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3. Speed restriction signs applicable to
routes diverging either to the right or to the left have arrow indications
provided on the post below the numerals and pointing in the direction of the
line over which the speed restriction applies. |
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4. Where there is a speed restriction on
both routes over a diverging junction two signs are provided. The sign for the
lower speed route, with arrow indication, is fixed at approximately the
commencing point of the speed restriction, and the sign for the higher speed
route, without arrow indication, at approximately 40 yards on the approach side
of the first mentioned sign. |
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5. At two way diverging junctions where the
speed restrictions over the junction are the same for each route, one sign only
is provided with two arrows, one pointing in each direction. |
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6. Signs are not provided at junctions
between parallel lines, or facing crossover roads, or when entering or leaving
slow, relief, goods loops, platform or bay lines, etc., where the general speed
restriction as prescribed in the Sectional Appendices, or other publications,
is 15 m.p.h. (or such other general speed restriction as laid down). Where,
however, the permissible speed through such a junction is above or below the
general speed restriction, a sign is provided. |
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7. The indicator signs mark the
commencement of the speed restrictions only and in no way relieve the driver
from the necessity of obeying all restrictions shewn in the Sectional
Appendices or other publication. |